package com.yycwxt.interceptor;

import com.yycwxt.domain.User;
import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class LoginInterceptor implements HandlerInterceptor {

    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        String url =request.getContextPath() + request.getRequestURL();
        // 允许静态资源直接请求
        if (url.endsWith(".js") || url.endsWith(".css") || url.endsWith(".ico") || url.endsWith(".jpg") ||
                url.endsWith(".png") || url.endsWith(".woff")) {
            return true;
        }
        else {
            User user = (User) request.getSession().getAttribute("user");
            if (user != null) {
                return true;
            } else {
                response.sendRedirect(request.getContextPath() + "/signin.html");
            }
            return false;
        }
    }

    @Override
    public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception {
        HandlerInterceptor.super.postHandle(request, response, handler, modelAndView);
    }

    @Override
    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {
        HandlerInterceptor.super.afterCompletion(request, response, handler, ex);
    }
}
